print("========================开始下载============================")
for i in range(0,101,2):

    if i==100:
        print(f'{i}%[', "*" * (i // 2), "." * (50 - i // 2), "]")
        print("========================下载完成============================")
        break
    else:
        print(f'{i}%[',"*"*(i//2),"."*(50-i//2),"]")


symbol="*"
print(symbol.join("hello"))
print(f'你个{symbol*2}')